Wheel-puller



T. H. JACOB.

WHEEL FULLER.

APPLICATION FILED MAH. 6, w20.

THOMAS I-I. JACOB, OF WAUSAU, WISCONSIN.

WHEEL-PULLER.

Specification of Letters Patent.

Patented Feb. 8, 1921.

Application filed March 6, 1920. Serial No. 363,805.

Be it known that I. 'lnonAs ll. JAoon, a citizen of the United States. and resident of Wausau` in the county oi l\'larathon and State of llisconsin, have. invented certain new and useful lmprovementsl in Wheel- Fullers; and l do hereby declare that the, following is a full, clear. and exact description thereof.

My invention refers to wheel pullers and it has for its object to provide a simple economical and durable tool ot' this type.'

The invention particularly refers to wheel pullers used in connection with removing wheels from axles wherein the hubs of such wheels are threaded at their outer ends. Heretoforc devices for extracting the? wheels of this type, while more or less effective, are` short lived duc to the fact that theyare clamped by means ot bolts upon the hub and in practice it has been demonstrated that such structures frequently mar or destroy the thread hubs.

Bearing in mind the above referred to ditiiculties the problem which I have solved is to .provide a tool that will extract the wheel without Inarring the threads thereon, which function I attain b the application of a shell having a threa ed sleeve therein for attachment to the threaded portion of a hub and thereafter an extractor plunger carried by the sleeve is arranged to exert end thrust upon the aXle to quickly remove the wheel hub without damaging anyof the parts thereof. v

With the above and other minor objects in View the invention consists in certain peculiarities of construction, combination and arrangement, of parts which are herein set forth with reference to the accompanying drawing and subsequently briefed in the claims.

In the accompanying drawing:

Figure 1` represents a side elevation of a hub and axle equipped with a wheel extractor embodying the features of my invention, the, extractor mechanism and portion -of the wheel hub being in section as indicated .'j-ment embodying one of the features of the Wheel extractor, the sleeve being partly broken away and in section to more clearly illustrate certain strut-tural features.

Referring by character to the drawingsg l represents the tapered end of an axle having mounted thereon a wheel hub 2, which wheel hub is threaded exteriorly at its outer end as indicated by the reference character 3. Mounted upon the outer end of the wheei hub is an extractor or puller comprising an outer Shelli the inner open end of which is provided with coarse saw tooth threads 5, the bevel ot` which threads is inclined inwardly and toward the hub axis. v

rThe saw tooth threads are adapted to rec\ive the correspomlingly threaded end 6 of :usleeve T which sleeve is provided with internal 'tine threads S at its outer end for engagement with .the hub threads 3.

In order to provide for compressibilit, of the sleeve its outer end is provided wit slots 9 that extend a predetermined distance through the body of the sleeve from the inner end thereof whereby iiexure is attained.

vln assembling thev parts of the wheel puller the sleeve 7 is first nested into the rigid shell 4 by revolving the sleeve so as to form the threaded union between the saw tooth exterior threads oi said sleeve and the corresponding interior 4threads of the shell.

YVhen the parts are so assembled they are held against relative rotation by the insertion of a headed bolt 9 which is in threaded union with the outer closedend of the shell and the head ot this bolt is adapted to enter a slotted recess 9 that is formed in the inner end ofthe sleeve as best shown in Figs. l and Thus it will be seen that after the bolt is put in place rotary movement of the sleeve will be impossible as the bolt 9 serves as a key.

The closed head 4 of the shell is formed with a transversely disposed bar receiving aperture 10 and the central portion of sai head is provided with a screw threaded aperture for the reception of a lunger 12, which plunger in this instance is 1n the form of a threaded bolt having a polygonal head.

From the foregoing description it will be seen that in order to insert the wheel puller about the hub of the wheel the operator tits a bar or other lever through the shell apertureylO whereby power may be applied to the shell so as to revolve it together with d sleeve to effect a 4 h e hetn'een it and the The plunger holt 12 is then reonneetion 'with its threaded union shell whereby the end of said plunger in rifaused to engagetlle end ot' the ante l and thus exerty an end-thrust or pull g strait, ipon the shell nieinlier together the i e. Referring to Fig'. l this movement ndi cansey a slight slippage lonmndjnah 're to the threaded connecie 5E t, tween the sleeve and shell due inclined aees et the eoaree threade1 f. t eanse the Sleeve 'to compress' l .me the end. et the huh 'zi so as to pre i y tendency ot" stripping? or niarring ad 3 et said huir Brt the eaine time Tension oit the sleeve oeenrs the tilt,

rol v et with tn "1r-after the wheel puller ttul) and the operation rionsljy the structural details ot the as a Whole may lie varied to aen tte saine example; other means tor the shell may he employed as a the ha mentioned and' also ng actions may be employed for @j the end thrust as a substitra: Waeei pnler adapted to be litt l to atleti outer end ot a wheel heb that ted nnen an axle, ooinprismg an rnternally threaded shell, an exteriorly threaded sleeve 1n union with the shell threads, the sleeve being provided with internal threads adapted to en age the `wheel hub threads, and an extractor plug earried by the shell for engagementwith the wheel axle.

2. `wheel puller adapted to he fitted to 'the threaded outer end ot a wheel hul) that i5 inounted upon an axle comprisingr a san tooth' exteriorlj; threaded shell, a eorrespoiiding;a threaded sleeve exlgfznfealiley with the shell threads the sleeve being; internall'vv threaded and adapted to engage the wheel huh threads, means for preventing relative rotation ot the hul) and shell, and anext'aetor plunger in threaded union with the shell for engagement witll'the wheel axle.

A wheel puller eoznprisin;- a shell` a comprensible sleeve earried hy the Shell, means associated with the sleeve and shell Thereby the Said Sleeve is eornpressed'inei dental to longitudinal movement of the Shell, and an extaetor plunger :arriedvby the'shell adapted to ilnpinee against a wheel axle to eause longitudinal movement of theY Shell and sleeve and nieanal tor preventing` relative rotation of the aforesaid hul) and shell.

n testimony that l elainl 'have hereunto setmy hand in the county ol llilwaakee Wisconsin.

the foregoing at i'idwauliee` THQMAS H'. JACOB.

and State ol" 

